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Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
Apr. 30, 2022
Oct. 31, 2021
Debt Instrument [Line Items]    
Finance lease obligations $ 80 $ 102
Finance Lease Liability Statement Of Financial Position Extensible List Debt Current, Other Liabilities Noncurrent Debt Current, Other Liabilities Noncurrent
Deferred finance costs $ (1,346) $ (1,556)
Total debt and financing obligations 84,949 87,708
Current portion of long-term debt and financing obligations (9,919) (10,085)
Long-term debt and financing obligations 75,030 77,623
Connecticut Green Bank Loan [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 4,800 4,800
Connecticut Green Bank Loan (Bridgeport Fuel Cell Project) [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 3,921 4,318
Liberty Bank Term Loan Agreement (Bridgeport Fuel Cell Project) [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 6,424 7,465
Fifth Third Bank Term Loan Agreement (Bridgeport Fuel Cell Project) [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 6,424 7,465
Finance Obligation for Sale-Lease Back Transactions [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit 56,446 56,492
State of Connecticut [Member]    
Debt Instrument [Line Items]    
Long-term Line of Credit $ 8,200 $ 8,622